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ESE EC : Analog Circuits Champion Quiz 5

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Question 1

Which one of the following is a regulated power supply?

Question 2

In a class A amplifier, VCE(max) = 15 B and VCE(min) = 1V. The conversion efficiency for a series fed load will be equal to.

Question 3

Which one of the following statement is not correct with regard to power amplifiers?

Question 4

Match List-I (Name of the circuit) with List-II (Property of the circuit) and select the correct answer using the code given below the lists:
List- I
A) Pre-amplifier
B) Power amplifier
C) Rectifier circuit
D) Purely resistive circuit
List- II
1) Non-linear circuit
2) Lumped. Linear, passive, bilateral, finite circuit.
3) Large signal amplifier
4) Small signal amplifier.

Question 5

What us the collector circuit efficiency of a class B push-pull amplifier if.
Vm = peak load voltage, and
VCC= collector supply voltage.

Question 6

In a class-B push- pull operation, the d.c. power draw is 28 W. What is the power delivered by the amplifier at the ideal maximum efficiency of power conversion?

Question 7

Where does the operating point of a class-B power amplifier lie?

Question 8

Assertion (A): Many power devices utilize the case itself as one of the principal current- carrying terminals.
Reason (R): Such a connection maximizes the thermal resistance between the working semiconductors and the transistor case.

Question 9

Match List-I (Type of Amplifier) with List-II (Property) and select the correct answer using the code given below the lists :
List- I
A) Single ended class A
B) Class AB push-pull
C) Class B push- pull
D) Class C
List-II
1) Medium efficiency with minimum distortion.
2) High efficiency with crossover distortion.
3) Harmonic generator with highest possible conversion efficiency.
4) Poor conversion efficiency with minimum distorting.

Question 10

A power amplifier operated from 12 V battery gives an output of 2 W. The maximum collector current in the circuit is.
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Feb 5ESE & GATE EC